What role does advertising play in mass media?

Advertising revenue is one of the main sources of income for many mass media.

Generally speaking, the more developed the advertising industry, the more developed the mass media.

This is particularly evident in some developed countries.

At present, this situation is not particularly obvious in China, because the mass media is obviously controlled by the government, but with the further improvement of China's market economy system, the media in colleges and universities I visited will inevitably rely more and more on the income from advertising to survive and develop!